Ltx 2.3 Quality Extend Video
Generate high-quality video with audio from images using LTX-2.3
What it does
Ltx 2.3 Quality Extend Video, in practice.
LTX 2.3 Quality Extend Video seamlessly extends an existing video forward or backward, generating new frames that match the source video's style, lighting, and motion dynamics. Only the generated extension is billed — source frames are never charged.
Product photo workspace
This page is a model reference. The workspace supports white backgrounds, scene changes, packaging text edits and model try-on using Qwen Image Edit.
Parameters
What you can set.
| Parameter | What it does | Options |
|---|---|---|
prompt | Text description of the extended scene. Maximum 2,000 characters. | |
video_url | URL of the input video to extend. Supported formats: mp4, mov, webm, m4v, gif. | |
extend_direction | Direction in which to extend the video. | forward backward |
num_frames | Number of frames to generate for the extension. Must be a multiple of 8 plus 1 (e.g. 25, 41, 81, 121). | default 81 |
resolution | Output video resolution preset. | square_hd square portrait_3_4 portrait_9_16 landscape_4_3 landscape_16_9 |
match_input_fps | Whether to match the frame rate of the source video. | default True |
generate_audio | Whether to generate accompanying audio for the extended video. | default |
seed | Random seed for reproducibility. Use the same seed and prompt to reproduce results. |
Sample prompt
The prompt behind the sample.
After the spacecraft landed, the soldiers stepped off one by one.
extend_direction: forwardnum_frames: 81resolution: landscape_16_9match_input_fps: Truegenerate_audio: FAQ
Short answers.
How much does Ltx 2.3 Quality Extend Video cost?
List price starts at $0.0030 per second of video at the base resolution; higher resolutions and longer durations cost more. An 8-second clip at the base tier is about $0.024. Per-use pricing, no subscription. Model prices are reference prices. The prompt workspace is free during the period shown on the homepage; no automatic charges.
What content policy applies to Ltx 2.3 Quality Extend Video?
Lightricks's standard content policy, plus this site's commercial-use rules: product, catalog and marketing work. Uploads are processed for your request only and are not used for training.
What does Ltx 2.3 Quality Extend Video take as input?
It is a video-to-video model. Generate high-quality video with audio from images using LTX-2.3
How do I use Ltx 2.3 Quality Extend Video?
Upload the source clip and describe the change: restyle, extend, re-time, or replace the background. Source length and frame rate bound the output, so start from the cleanest version you have. Register or sign in to edit product photos with Qwen Image Edit. Other models on this page are catalog references.
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